Cutter-coupling for milling-machines.



- JGOETZ.' ol'rT'BnooUPLmG ron MILLING ummms. il APPLIUATIOE FILED KARL 13,1914.

:1,104,044- i l Patented Ju1y2'1, 1914.

Vw: A luna-m -T- M" l l I an STATES- form Gon'rz, or WEST Minis,,Wisc'eNsiN, '.'SSIGNonroTHE xnnrsmi'rir monac- TURINGco., or MILWAUKEE, WISCONSIN, A oomona'rioit or WISCONSIN.

To all whomit may concer/n.'-

Be it known that I, JOHN Gonrz, a citizen of the United States, and resident of West Allis, in the county of Milwaukee and State ofy Wisconsin, have invented new and useful Improvements in Cutter-Couplings for' Milling-Machines,`o vwhich the following is a description, reference being had to the accompanying drawings, which are a part-'of this speciiication. This invention relates tocutter-couplings for milling machines and has orits opject to provide a coupling which may be quickly connected or disconnected and which will accurately center the cutter with relation tothe spindle.

With the above and 'other objects in Viewl the invention consists in the cutter coupling for milling machines asherein claimed and a sectional view thereof with the parts disconnected, the sectional plane thereof being at right angles to the sectional plane ot Fig. 1; and, Figs. 3 and 4 are end views of the spindle and cutter head respectively.

In these drawings 10 indicates a milling machine frame having the spindle 11 journaled therein through abushing 12 as usual.

The enlarged end of the spindle 'forms a threaded head 13 having a conical boss or projection 14 on the end face thereof concentric with the spindle. The conicalproj'ection 14 has a slot 15 extending diametrically through ittoreceive a key lf3-approxi mately square in cross section which closely tits therein for about one-half itsgtliickness.

The part of thekey 'projectingvfiffoiif'the head of the spindle fits within a slot 17 extend- 'ing-diametrically through a threaded con'v centric connectin@ boss 18 on a cutter head i 19, while the conical projection, 14 tits withonnect1ng boss 18. VThe screw threads of 1n a correspondingly shaped recess 20 of the cutter head are different, that 'onefisa right hand thread and the other aleft hand thread, A4 nut '21'provided with right and a by Letters'Patent is:

ou'rrnnfcourriineron iaiLLrNcfmncHINES.'

' left internal screw .threads tsupon the head v andthe connecting boss 18 with its'threads turning into the threadsthereof so that when the nut is turnedin one directionv the parts are drawn together and when turned in the other direction they are forcedapart.

The conical tit between the projection 14 :ofthe spindle and the conical recess 'of the connecting boss of the cutter head assure an accurate alinernent of the axis of the cutter head and the axis of the spindle, while the presence. of the key 16- iitting in the siots 15 and 17 -compels the cutter head to turn with the spindle. l

The nut may be threaded onto one member to a greater extent than on the other, so as to remain connected therewith when the cutter head is disconnected, but when turned to connect the parts itserves to tightly clamp them together in their keyed engagement and in true alinement.

What I claim as new and desire to secure 1. A cutter coupling for milling machines Patent-.ea July zi, ijaia. i

and the like, comprising the comobination with a spindle having a threaded end with a slotted end tace and a cutter head having a threaded boss with a slotted end face'of a key fitting withinthe slots in the end of the spindlel and `the boss', and a nut threaded on therspindle and the boss to draw them together. j A

2. A cutter coupling for milling machines and the-like, comprising a spindle having a threaded headand a conical projection at the` end face thereof with a slot ltherethrough, a cutter head having a threaded connecting boss with a conical recess therein to receive and it upon the conical projection of the spindle and --having a slot in its end, a key fitting vwithin the slots of the spindle and the connecting boss, and `a nuthav'ing right and left hand threads fitting on the head f the spindle land on the connecting boss ofthe cutterhead respectively to draw the parts together or force. them apart.

' 4ntestimony whereof, I-atlix my signature,

in'presence'of two'witnesses.: a

JoiiN oonrz.

ico 

